Overstocked with extra Gen 2 batteries- 14.8 volt Lithium (4S8P 21700 Cells) 40Ah 592Wh with Anderson connectors. This battery needs to be charged using a dedicated lithium-ion charger. Charger is not included. This battery is not waterproof and must be housed in a protective case when used. Ideal for a hobby kayak project for accessory lighting or to run other instruments.